As part of the NBA's sweeping sanctions against Clippers owner Donald Sterling over his controversial racial remarks, NBA Commissioner Adam Silver is urging the league's other owners to push for the Clippers' sale.

Steve Ballmer's $2-billion offer for the Los Angeles Clippers — nearly four times the record sale for an NBA team — has experts puzzling over how the former Microsoft chief plans to make any money on the deal.
But Ballmer, with a net worth...